At the beginning of the 20th century, Chile already has a fully elected bicameral Congress, after trying various formulas during the first years of independent life. The 1833 Constitution established a Congress made up of a Chamber of Deputies and a Senate, as is the case today, not only in Chile but in many of the states with democratic government regimes.
Beca Frei, J. P. (2015). Integration and functions of the National Congress in the 20th century. Revista De Derecho Público, (63), Págs. 489–498. https://doi.org/10.5354/rdpu.v0i63.36307
